WO2022000613A1 - Dispositif d'affichage - Google Patents

Dispositif d'affichage Download PDF

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Publication number
WO2022000613A1
WO2022000613A1 PCT/CN2020/103262 CN2020103262W WO2022000613A1 WO 2022000613 A1 WO2022000613 A1 WO 2022000613A1 CN 2020103262 W CN2020103262 W CN 2020103262W WO 2022000613 A1 WO2022000613 A1 WO 2022000613A1
Authority
WO
WIPO (PCT)
Prior art keywords
support layer
display panel
display device
flexible display
bending area
Prior art date
Application number
PCT/CN2020/103262
Other languages
English (en)
Chinese (zh)
Inventor
刘亚丽
Original Assignee
武汉华星光电半导体显示技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 武汉华星光电半导体显示技术有限公司 filed Critical 武汉华星光电半导体显示技术有限公司
Priority to US16/971,911 priority Critical patent/US11809232B2/en
Publication of WO2022000613A1 publication Critical patent/WO2022000613A1/fr

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Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1637—Details related to the display arrangement, including those related to the mounting of the display in the housing
    • G06F1/1652—Details related to the display arrangement, including those related to the mounting of the display in the housing the display being flexible, e.g. mimicking a sheet of paper, or rollable
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1637—Details related to the display arrangement, including those related to the mounting of the display in the housing
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K2102/00—Constructional details relating to the organic devices covered by this subclass
    • H10K2102/301—Details of OLEDs
    • H10K2102/311—Flexible OLED
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K77/00—Constructional details of devices covered by this subclass and not covered by groups H10K10/80, H10K30/80, H10K50/80 or H10K59/80
    • H10K77/10—Substrates, e.g. flexible substrates
    • H10K77/111—Flexible substrates
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/549—Organic PV cells

Definitions

  • the present application relates to the technical field of displays, and in particular, to a display device.
  • a flexible display device is such a new type of display product with flexibility.
  • a user can fold or roll the flexible display device as required to reduce the size of the display device and improve the portability of the display device.
  • the foldable display device can also be unfolded to obtain a larger display screen.
  • the performance improvement of flexible display devices has become the focus of researchers.
  • the foldable display screen is prone to wrinkling such as "creases” and "white lines” during the repeated bending and flattening process.
  • the current screen factory mainly uses extremely thin amorphous materials or metals. It is attached under the panel to ensure the bending performance while increasing the overall stiffness of the panel during bending through amorphous or metal. The increase in stiffness can greatly reduce "creases", “white marks” The undulating height of the line".
  • the mechanism during folding in order to avoid excessive extrusion of the display area in the bending area by the mechanism during folding, resulting in defective products, when the panel is actually attached to the metal, it is rarely completely attached.
  • An embodiment of the present invention provides a display device, comprising:
  • a flexible display panel includes a display surface and a non-display surface arranged oppositely, the flexible display panel further includes at least one bending area and at least two non-bending areas, the bending area and the non-bending area are The bending regions are arranged in the same direction, and the bending regions are located between two adjacent non-bending regions;
  • the support layer is located on the non-display surface of the flexible display panel
  • the adhesive layer is located between the support layer and the flexible display panel, and bonds the support layer and the flexible display panel;
  • the bending area is in a water drop shape or a U shape
  • the support layer includes amorphous material or stainless steel material; the thickness of the support layer is less than or equal to 200 microns.
  • the support layer and the flexible display panel have the same size.
  • the support layer in the non-bending area, is completely adhered to the flexible display panel through the adhesive layer, and in the bending area, the support layer and the flexible display panel are completely attached.
  • the flexible display panel is not attached, and the support layer is located in the hollow area of the bending area.
  • the distance L in the bending region that does not adhere to the adhesive layer is:
  • the R1 is the lateral radius of the flexible display panel in the bending area after the display device is bent
  • the R2 is the flexible display panel in the bending area after the display device is bent vertical radius.
  • the support layer includes a plurality of segments, and the support layer includes a hard support layer and a soft support layer.
  • the hard supporting layer in the non-bending area, is attached to the flexible display panel, and in the bending area, the soft supporting layer is in contact with the flexible display panel.
  • Flexible display panel bonding in the non-bending area, the hard supporting layer is attached to the flexible display panel, and in the bending area, the soft supporting layer is in contact with the flexible display panel.
  • the soft support layer includes silica gel or silicone rubber, and the viscosity of the soft support layer is 400,000 centipoise to 700,000 centipoise.
  • the thicknesses of the soft support layer and the hard support layer are the same.
  • An embodiment of the present invention also provides a display device, comprising:
  • a flexible display panel includes a display surface and a non-display surface arranged oppositely, the flexible display panel further includes at least one bending area and at least two non-bending areas, the bending area and the non-bending area are The bending regions are arranged in the same direction, and the bending regions are located between two adjacent non-bending regions;
  • the support layer is located on the non-display surface of the flexible display panel
  • the adhesive layer is located between the support layer and the flexible display panel, and bonds the support layer and the flexible display panel;
  • the bending area is in a water drop shape or a U shape.
  • the support layer includes an amorphous material or a stainless steel material.
  • the thickness of the support layer is less than or equal to 200 micrometers.
  • the support layer and the flexible display panel have the same size.
  • the support layer in the non-bending area, is completely adhered to the flexible display panel through the adhesive layer, and in the bending area, the support layer and the flexible display panel are completely attached.
  • the flexible display panel is not attached, and the support layer is located in the hollow area of the bending area.
  • the distance L in the bending region that does not adhere to the adhesive layer is:
  • the R1 is the lateral radius of the flexible display panel in the bending area after the display device is bent
  • the R2 is the flexible display panel in the bending area after the display device is bent vertical radius.
  • the support layer includes a plurality of segments, and the support layer includes a hard support layer and a soft support layer.
  • the hard supporting layer in the non-bending area, is attached to the flexible display panel, and in the bending area, the soft supporting layer is in contact with the flexible display panel.
  • Flexible display panel bonding in the non-bending area, the hard supporting layer is attached to the flexible display panel, and in the bending area, the soft supporting layer is in contact with the flexible display panel.
  • the soft support layer includes silica gel or silicone rubber, and the viscosity of the soft support layer is 400,000 centipoise to 700,000 centipoise.
  • the thicknesses of the soft support layer and the hard support layer are the same.
  • the adhesive layer at the bending area is hollowed out, that is, the support layer in the bending area is not adhered to the flexible display panel. Because there is no adhesive layer in the bending area, the When the display device is bent, the bending area is not constrained by the mechanism, which can be easily bent; when the display device is unfolded, the deformation of the adhesive layer will not cause "creases" and "waves”. Phenomenon. And a segmented support layer structure is also provided, and a soft support layer is used at the bending area.
  • the soft support layer When the display device is bent, the soft support layer can reduce the stress from the non-bending area, reduce the deformation of the adhesive layer, the soft support layer is resistant to bending, and can also maintain all
  • the display device After the display device is folded, it has a water drop shape or a U shape; when the display device is unfolded, the soft support layer has good flatness, which will reduce the occurrence of "creases” and "waves". Therefore, using the display device provided by the embodiment of the present invention, after repeated folding operations for many times and returning to the unfolded state, the flatness of the adhesive layer can be improved, and the adhesiveness between the adhesive layer and the functional layer to which it is bonded can be ensured. Avoid problems such as degumming, "creases" and "waves" on the display device.
  • FIG. 1 is a schematic structural diagram 1 of a display device provided in this embodiment.
  • FIG. 2A is a schematic diagram 1 of a bending structure of the display device provided in this embodiment.
  • FIG. 2B is a second schematic diagram of a bending structure of the display device provided in this embodiment.
  • FIG. 3 is a second schematic structural diagram of the display device provided in this embodiment.
  • first and second are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, features delimited with “first”, “second” may expressly or implicitly include one or more of said features. In the description of the present application, “plurality” means two or more, unless otherwise expressly and specifically defined.
  • the terms “installed”, “connected” and “connected” should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; it can be mechanical connection, electrical connection or can communicate with each other; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction of two elements relation.
  • installed should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; it can be mechanical connection, electrical connection or can communicate with each other; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction of two elements relation.
  • a first feature "on” or “under” a second feature may include direct contact between the first and second features, or may include the first and second features Not directly but through additional features between them.
  • the first feature being “above”, “over” and “above” the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level higher than the second feature.
  • the first feature is “below”, “below” and “below” the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature has a lower level than the second feature.
  • the embodiment of the present invention provides a display device, and the display device may be an OLED display device with a top emission structure or other flexible display device, which is not limited in the embodiment of the present invention, and the embodiment of the present invention takes a flexible display device as an example to explain. As shown in FIG. 1 to FIG.
  • a display device provided by the present invention includes a flexible display panel 101, the flexible display panel 101 includes a display surface and a non-display surface arranged oppositely, and the flexible display panel 101 further includes at least One bending area 20 and at least two non-bending areas: the non-bending area 10 and the non-bending area 30, the bending area 20 and the non-bending area 10 and the non-bending area 30 are along the same
  • the bending area 20 is located between the two adjacent non-bending areas 10 and the non-bending areas 30; at least one layer of support layer 102 is located in the flexible display On the non-display surface of the panel 101, the support layer 102 plays a role of supporting the flexible display panel 101, reducing the stress received by the flexible display panel 101; at least one layer of adhesive layer 103, the adhesive layer 103 is located in Between the support layer 102 and the flexible display panel 101, the support layer 102 and the flexible display panel 101 are bonded.
  • the bending region 20 is in a water drop shape or a U shape.
  • the material of the support layer 102 includes but is not limited to amorphous material or stainless steel SUS, and the thickness of the support layer 102 is within 200 microns.
  • the adhesive layer 103 includes OCA adhesive layer material.
  • FIG. 1 which is a schematic structural diagram of a display device provided in this embodiment
  • a support layer 102 of the same size as the flexible display panel 101 is used, that is, the support layer 102 is the same size as the flexible display panel 101 .
  • the flexible display panel 101 has the same size, and is attached to the flexible display panel 101 through the adhesive layer 103 .
  • the support layer 102 is completely adhered to the flexible display panel 101 through the adhesive layer 103; in the bending area 20.
  • the support layer 102 is not attached to the flexible display panel 101, that is, the support layer 102 is a hollow area in the bending area 20, and the hollow area is at the bending area 20, so The space formed between the support layer 102 and the flexible display panel 101 is not adhered.
  • This embodiment also proposes a method of experimental design to determine a reasonable distance of the non-adhesive layer in the bending area and a theoretical formula between each influencing factor.
  • the shape of the bending area of the display device provided in this embodiment after bending includes at least a water drop shape and a U shape.
  • the R1 is the lateral radius of the flexible display panel in the bending area after the display device is bent
  • the R2 is the flexible display panel in the bending area after the display device is bent vertical radius.
  • a water drop-shaped bending area is formed.
  • the radius of the bending area is 4 mm
  • the reasonable distance of the non-adhesive layer in the bending area is 38 mm to 44 mm.
  • the bending area is reasonable The distance of the non-adhesive layer is 26 mm to 30 mm; when the radius of the bending area is 1.5 mm, the reasonable distance of the non-adhesive layer in the bending area is 18 mm to 22 mm; that is, the bending The smaller the radius of the area, the smaller the reasonable distance of the non-adhesive layer in the bending area.
  • the reasonable distance of the non-adhesive layer in the bending area is 14.6 mm to 24 mm; when bending When the radius of the bending area is 3 mm, the reasonable distance of the non-adhesive layer in the bending area is 11.42 mm to 22 mm; when the radius of the bending area is 2 mm, the reasonable non-adhesive layer in the bending area is The distance is 8.28 mm to 18 mm; when the radius of the bending area is 1.5 mm, the reasonable distance of the non-adhesive layer in the bending area is 6.71 mm to 16 mm; that is, the bending area forms different bending
  • the folded shape has different effects on the reasonable distance of the non-adhesive layer in the folded area.
  • the display device includes a flexible display panel 101, and the flexible display panel 101 includes a display surface and a non-display surface arranged opposite to each other.
  • the flexible display panel 101 also It includes at least one bending area 20 and at least two non-bending areas: the non-bending area 10 and the non-bending area 30, the bending area 20 and the non-bending area 10, the non-bending area 30 Arranged in the same direction, the bending area 20 is located between two adjacent non-bending areas 10 and the non-bending area 30; at least one supporting layer 102 is located in the On the non-display surface of the flexible display panel 101, the support layer 102 plays a role of supporting the flexible display panel 101 and reduces the stress received by the flexible display panel 101; at least one layer of adhesive layer 103, the adhesive layer 103 is located between the support layer 102 and the flexible display panel 101 , and bonds the support layer 102 and the flexible display panel 101 .
  • the bending region 20 is in a water drop shape or a U shape.
  • the material of the support layer 102 includes but is not limited to amorphous material or stainless steel SUS, and the thickness of the support layer 102 is within 200 microns.
  • the adhesive layer 103 includes OCA adhesive layer material.
  • the support layer 102 is a segmented design, and the support layer 102 includes a hard support layer 1021 and a soft support layer 1022 .
  • the hard support layer 1021 is disposed in the non-bending area 10 and the non-bending area 30
  • the soft supporting layer 1022 is disposed in the bending area 20 .
  • the material of the hard support layer 1021 includes but is not limited to amorphous material or stainless steel SUS
  • the soft support layer 1022 is a flexible material that is resistant to bending
  • the soft support layer 1022 includes but is not limited to silica gel or silicon Rubber
  • the viscosity of the soft support layer 1022 is 400,000 cps ⁇ 700,000 cps.
  • the hard support layer 1021 is attached to the flexible display panel 101 through the adhesive layer 103
  • the The soft support layer 1022 is attached to the flexible display panel 101 through the adhesive layer 103 .
  • the thickness of the soft support layer 1022 and the hard support layer 1021 are the same.
  • a segmented support layer 102 is used to attach the flexible display panel 101 , and a hard support layer 1022 and the flexible display panel are used in the non-bending area 10 and the non-bending area 30 .
  • the attachment of the display panel 101 can ensure that when the display device is unfolded and tiled, it not only has the stiffness of the hand when pressed, but also has good flatness.
  • a bending-resistant soft support layer 1022 is used to adhere to the bending area 20 of the flexible display panel 101 , which can reduce the stress from the non-bending area and reduce the stress of the adhesive layer. deformation, the soft support layer 1022 is resistant to bending, and can also keep the display device in a water drop shape or a U shape after being folded.
  • the adhesive layer at the bending area is hollowed out, that is, the support layer in the bending area is not adhered to the flexible display panel. Because there is no adhesive layer in the bending area, the When the display device is bent, the bending area is not constrained by the mechanism, which can be easily bent; when the display device is unfolded, the deformation of the adhesive layer will not cause "creases" and "waves”. Phenomenon. And a segmented support layer structure is also provided, and a soft support layer is used at the bending area.
  • the soft support layer When the display device is bent, the soft support layer can reduce the stress from the non-bending area, reduce the deformation of the adhesive layer, the soft support layer is resistant to bending, and can also maintain all
  • the display device After the display device is folded, it has a water drop shape or a U shape; when the display device is unfolded, the soft support layer has good flatness, which will reduce the occurrence of "creases” and "waves". Therefore, using the display device provided by the embodiment of the present invention, after repeated folding operations for many times and returning to the unfolded state, the flatness of the adhesive layer can be improved, and the adhesiveness between the adhesive layer and the functional layer to which it is bonded can be ensured. Avoid problems such as degumming, "creases" and "waves" on the display device.
  • a display device provided by the embodiments of the present application has been introduced in detail above.
  • the principles and implementations of the present application are described in this paper by using specific examples.
  • the descriptions of the above embodiments are only used to help understand the technical solutions of the present application. and its core idea; those of ordinary skill in the art should understand that it is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements to some of the technical features; and these modifications or replacements do not make the corresponding
  • the essence of the technical solutions deviates from the scope of the technical solutions of the embodiments of the present application.

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

Est divulgué un dispositif d'affichage, comprenant : un panneau d'affichage souple comportant au moins une région de courbure et au moins deux régions de non-courbure ; au moins une couche de support ; et au moins une couche adhésive positionnée entre la couche de support et le panneau d'affichage souple. Dans la présente invention, de multiples procédés sont utilisés pour joindre un panneau et une couche de support d'un écran d'affichage dans une région de courbure et une formule de calcul théorique est utilisée pour obtenir une distance sans adhésif raisonnable, de telle sorte que l'écran d'affichage est soumis à moins de contraintes par un mécanisme lorsqu'il est plié.
PCT/CN2020/103262 2020-07-01 2020-07-21 Dispositif d'affichage WO2022000613A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US16/971,911 US11809232B2 (en) 2020-07-01 2020-07-21 Display device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202010625255.2A CN111816070B (zh) 2020-07-01 2020-07-01 显示装置
CN202010625255.2 2020-07-01

Publications (1)

Publication Number Publication Date
WO2022000613A1 true WO2022000613A1 (fr) 2022-01-06

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Application Number Title Priority Date Filing Date
PCT/CN2020/103262 WO2022000613A1 (fr) 2020-07-01 2020-07-21 Dispositif d'affichage

Country Status (3)

Country Link
US (1) US11809232B2 (fr)
CN (1) CN111816070B (fr)
WO (1) WO2022000613A1 (fr)

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CN115171533A (zh) * 2022-06-29 2022-10-11 昆山国显光电有限公司 盖板、可折叠显示模组以及显示装置

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CN112614433A (zh) 2020-12-29 2021-04-06 武汉华星光电半导体显示技术有限公司 柔性显示面板及柔性显示装置
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CN114170912B (zh) * 2021-12-15 2024-01-16 武汉华星光电半导体显示技术有限公司 显示模组及电子设备
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CN114927063A (zh) * 2022-05-27 2022-08-19 武汉华星光电半导体显示技术有限公司 折叠显示装置
CN115050261B (zh) * 2022-05-31 2024-03-19 武汉华星光电半导体显示技术有限公司 显示装置

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